Astrophysics satellite based on the Venera 4V-2 bus design. Electrophysical research of galactic and extragalactic sources of ultraviolet ray and X-ray emission. The scientific apparatus was built jointly by scientists and specialists from the USSR and France.

Astrophysics. Electrophysical research of galactic and extragalactic sources of ultraviolet ray and X-ray emission. The scientific apparatus was built jointly by scientists and specialists from the USSR and France.